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Finding the Fourth Proportional to 7,521.92, 10,378.50 and 4,378.22

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Solution

The fourth proportional to 7,521.92, 10,378.50 and 4,378.22 is: 6,040.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,521.92 : 10,378.50 = 4,378.22 : x
  2. Step 2: Convert to fraction form
    7,521.92/10,378.50 = 4,378.22/x
  3. Step 3: Cross multiply
    7,521.92x = 10,378.50 × 4,378.22
  4. Step 4: Simplify right side
    7,521.92x = 45,439,356.27
  5. Step 5: Solve for x
    x = 45,439,356.27/7,521.92
  6. Step 6: Final answer
    x = 6,040.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.